Other remains were found inside the large hole, but have not been identified yet.
"I want to make it very, very clear that Mr. Dinardo has been arrested on charges that do not relate or pertain to this case", Weintraub said. Meo, his friend said, is "the most good-hearted, loyal, hard-working young man I've ever met in my life".
Dinardo had been arrested earlier in the week for owning a gun he was not allowed to possess under state law because he had previous been involuntarily committed in a mental health facility, prosecutors said.
On Wednesday, police arrested a young man whose parents own the farm on a charge he tried to sell a vehicle belonging to one of the missing men. Since Saturday, the effort, aided by the Federal Bureau of Investigation, has focused largely on a 90-acre farm in Solebury Township, where authorities have used dogs, ATVs, and heavy construction equipment to dig up evidence. We're going to bring each and every one of these lost boys home to their families, one way or another. Late last week, 18-year-old Dean Finocchiaro, 19-year-old Jimi Tar Patrick, 21-year-old Tom Meo, and 22-year-old Mark Sturgis were all reported missing - last seen between Wednesday and Friday - and now after several days of searching, Bucks County authorities have discovered the human remains of several bodies buried in a mass grave.
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Weintraub explained that cadaver dogs had been used in the search for the missing men and that they were an essential part of finding human remains.
Whether DiNardo was connected o the missing men - Finocchiaro, Meo, 19-year-old Jimi Tar Patrick and Mark Sturgis, 22 - is unclear, but police are trying to determine if the five men ran in the same circles. Patrick was last seen on Wednesday, the other three on Friday. Patrick disappeared a week ago.
Close friends Sturgis and Meo were last seen near the Doylestown area in Bucks County, CNN affiliate KYW-TV reported. The vehicle was found on the DiNardo family's property. DiNardo, who has a history of mental illness, was arrested on Monday on a firearms charge and later released on $1 million bail. His father put up $100,000 to bail him out Tuesday.
Whether the other men knew each other isn't known, though there are "indications that some or all of the men knew one another", the Bucks County District Attorney Matthew Weintraub's Office said. And after he was bailed out by his father on an unrelated charge earlier this week, a judge has now set his bail at $5 million.